深度处理水厂上下向流活性炭池运行分析

对Z市2个臭氧活性炭深度处理水厂的上向流和下向流活性炭池生物膜形成和运行情况开展了长期运行监测。结果显示,已运行5年的2个地表水厂活性炭的物理效能指标碘值和亚甲基蓝值均衰减严重。目前活性炭池已形成较为稳定生物膜,对COD_Mn、氨氮和UV₂₅₄去除率稳定。在目前原水水质情况下能保证出水水质达标,可暂时不考虑更换活性炭。但在后续运行过程中应密切关注出水水质和生物泄漏情况,进一步判定活性炭更换时间。

Operation analysis of up-flow and down-flow activated carbon filter in advanced water treatment plants

A long-term operation monitoring on the formation of biofilm and operation in up-flow and down-flow activated carbon filters was studied for two advanced treatment plants in Z City. The results show that methylene blue adsorption and iodine adsorption of carbon was decayed seriously after 5 years. At present, the stable biofilm has been formed in the carbon filters, and the removal rate of CODMn, NH3-N and UV254 is stable. In the condition of raw water quality presently, the effluent quality can reach the standard, the replacement of activated carbon can not be considered temporarily. But in the follow operation process, we should pay close attention to the effluent quality and biological leakage, and determine replacement time of activated carbon.